• Skip to primary navigation
  • Skip to main content
  • Skip to footer

LKT Labs

Biochemicals for Life Science Research

  • Products
    • New Products
    • Cancer Biology
    • Cardiovascular
    • Endocrine Signaling and Immunology
    • Metabolic and GI Pathology
    • Microbiology
    • Natural Products
    • Neuroscience
    • Peptides
    • Pharmaceutical Impurities and Derivatives
    • Stem Cell Modulators
  • Services
    • Custom Synthesis
    • Natural Product Isolation
    • Analytical Services
  • Int’l Distributors
  • Support
    • About LKT Labs
    • General Inquiry
    • Bulk Quote Request
    • Document Request
    • Technical Support
    • Catalog Request
    • Product Flyers
  • Contact Us
  • Cart
  • Login / Register
L-Thyroxine Sodium Pentahydrate

L-Thyroxine Sodium Pentahydrate

Product ID T3197
Cas No. 6106-07-6
Purity ≥97%
Product Unit SizeCostQuantityStock
100 mg $78.00 In stock
1 g $201.00 In stock
5 g $765.00 In stock
Bulk Quote

Quicklinks

  • Description
  • Product Info
  • Shipping and Storage
  • Downloads
  • References
  • Description
  • Product Info
  • Shipping and Storage
  • Downloads
  • References
  • Custom Order

Description

L-Thyroxine is the thyroid hormone T4, normally secreted by the thyroid gland. L-Thyroxine decreases thyroid size and thyroid-stimulating hormone levels and is used clinically to treat goiter and hypothyroidism.

Product Info

Cas No.

6106-07-6

Purity

≥97%

Formula

C15H10I4NNaO4 • 5H2O

Formula Wt.

888.93

IUPAC Name

sodium;(2S)-2-amino-3-[4-(4-hydroxy-3,5-diiodophenoxy)-3, 5-diiodophenyl]propanoate;pentahydrate

Synonym

Levothyroxine

Melting Point

207.0 - 210.0

Solubility

DMSO (100 mg/mL), Ethanol (5 mg/mL). Insoluble in water.

Appearance

White to off white powder

Shipping and Storage

Store Temp

Ambient

Ship Temp

Ambient

Downloads

MSDS

T3197 MSDS PDF

Info Sheet

T3197 Info Sheet PDF

References

Gullo D, Latina A, Frasca F, et al. Levothyroxine monotherapy cannot guarantee euthyroidism in all athyreotic patients. PLoS One. 2011;6(8):e22552. PMID: 21829633.

Svensson J, Ericsson UB, Nilsson P, et al. Levothyroxine treatment reduces thyroid size in children and adolescents with chronic autoimmune thyroiditis. J Clin Endocrinol Metab. 2006 May;91(5):1729-34. PMID: 16507633.

Custom Order

  • Size of single unit expressed as number (e.g. '500' in the case of 500 mg)
  • Total quantity of unit size desired (e.g. '10' in the case of 10 x 500 mg). If only one unit is desired, you may leave this blank.
  • This field is for validation purposes and should be left unchanged.

Related Products

  • C281006

    Chaetocin

    Chaetocin is naturally produced by Chaetomium s...

    ≥98%
  • C3262

    Ciprofloxacin

    Fluoroquinolone; topoisomerase IV and bacterial...

    ≥98%
  • P8167

    Puromycin Aminonucleoside

    Purine nucleoside analog; DNA chain terminator,...

    ≥98%
  • G3253

    8-Gingerol

    Phenol found in Zingiber; 5-HT3 antagonist.

    ≥99%
  • A9914

    AZD-8055

    mTOR inhibitor.

    ≥98%
  • M577521

    Monascorubrin

    Bulgarialactone azaphilone

    ≥98%
  • M0278

    Matrine

    Alkaloid found in Sophora.

    ≥98%
  • G3351

    Ginkgolic Acid (17:1)

    Mixture of alkylphenols found in Ginkgo; HIV pr...

    ≥98%
  • M1444

    MDL 29951

    GPR17 agonist, NMDA and fructose 1,6-bisphospha...

    ≥98%
  • A0001

    A-803467

    Nav1.8 Na+ channel blocker, potential Nav1.5 Na...

    ≥97%
  • A6933

    Aristolochic Acid B

    Found in Aristolochia and Radix; potential PLA2...

    ≥95%
  • I5440

    INK128

    mTOR inhibitor.

    ≥99%
  • N5605

    Nobiletin

    Polymethoxylated flavone found in citrus fruits...

    ≥97%
  • I0418

    Iberverin

    ITC found in cruciferous vegetables, homolog of...

    ≥98%
  • U482046

    (-)-Umbellulone

    Antimicrobial found in essential oils from plan...

    ≥98%
  • M2076

    Metformin Hydrochloride

    AMPK activator.

    ≥98%
  • H9714

    L-5-Hydroxytryptophan

    Endogenous amino acid, precursor of 5-HT and me...

    ≥98%
  • T2934

    Thiamphenicol Palmitate

    Chloramphenicol derivative; protein translation...

    ≥98%
  • A761001

    AT-7519 free base

    ATP competitive CDK inhibitor.

    ≥98%
  • O4402

    Olaparib

    PARP1/2 inhibitor.

    ≥98%

Footer

  • Contact Us
  • About Us
  • Site Map
  • Terms and Conditions
LKT Laboratories, Inc.
545 Phalen Blvd.
St. Paul MN, 55130

Ph: (888)-558-5227
Fax: (888)-558-7329

©2026 LKT Laboratories, All Rights Reserved - Products for research use only